832-51508 - Stop sign, cooling towers of Braunkohlekraftwerk Neurath, lignite-fired power plant, Grevenbroich, North Rhine-Westphalia, Germany, Europe

832-50379 - Warnign sign, warning of undertow and falling off the platform, Germany, Europe

832-52313 - Welcome sign of the small fishing village of Rockport, Massachusetts, New England, USA

832-42095 - Safety sign of a joint venture with the German specialty chemicals company SKW Metallurgy in the industrial zone of Pasakha near Phuentsholing, Bhutan, Asia

832-42498 - Pedestrian crossing sign in front of apartment buildings

832-40578 - Speed hump warning sign, Caution Children sign, Faroe Islands, island group in the North Atlantic, Denmark, Northern Europe

832-40248 - Arret, French stop sign, Havre Saint-Pierre, Duplessis district, Quebec, Canada

832-45368 - Warning sign, energy generation, geothermal area, lake M˝vatn, northern Iceland, Europe

832-40509 - Sign "Dieser Bereich wird videoueberwacht", German for "this area is under video surveillance", on a computer screen

832-47727 - Sign at pedestrian traffic lights, Florida, United States, USA

832-40577 - School with a warning sign, Faroe Islands, island group in the North Atlantic, Denmark, Northern Europe

1113-80290 - Guard in front of the Royal Palace in the old town Gamla Stan of Stockholm, Sweden

1113-77926 - USA CA San Francisco downtown

857-75538 - A female mountain biker stops to enjoy the view while riding the trails of Mt. Sentinel, Missoula, Montana.

857-75536 - A female mountain biker pedals the trail on Mt. Sentinel, Missoula, Montana.

857-75535 - A female mountain biker pedals the trail on Mt. Sentinel, Missoula, Montana.

857-75534 - A female mountain biker pedals the trail on Mt. Sentinel, Missoula, Montana.

857-75540 - A female mountain biker stops to enjoy the view while riding the trails of Mt. Sentinel, Missoula, Montana.

799-2003 - Cape Cornwall and the Sentinel from the rocky shores of Priests Cove, Cornwall, England, United Kingdom, Europe

807-1062 - Flatiron Building, Columbus Tower (Sentinel Building), North Beach, San Francisco, California, United States of America, North America

815-2010 - Unity Sentinel, Liverpool, Merseyside, England, United Kingdom, Europe

698-2795 - Tourist, hiker walking towards Upper Yosemite Falls, on boardwalk, across Sentinel Meadow, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America

815-1449 - Unity Sentinel, Liverpool, Merseyside, England, United Kingdom, Europe

832-16846 - Smoke from smoke stacks, ThyssenKrupp Steelworks, Duisburg, North Rhine-Westphalia, Germany, Europe

759-5217 - Swiss guards, Italy, Rome, Vatican City

759-5216 - Swiss guards, Italy, Rome, Vatican City

743-694 - Meerkat sentinel (Suricatta suricata), Kgalagadi Transfrontier Park, Northern Cape, South Africa, Africa

743-653 - Meerkat (Suricata suricatta) sentinel, Kalahari Meerkat Project, Van Zylsrus, Northern Cape, South Africa, Africa

743-654 - Meerkat (Suricata suricatta) sentinel, Kalahari Meerkat Project, Van Zylsrus, Northern Cape, South Africa, Africa

747-420 - Chambered cairn at Cairnholy, the area in front of the wall and Sentinel Stones is believed to have been for worship or communal purposes, near Creetown, Dumfries and Galloway, Scotland, United Kingdom, Europe

747-419 - Chambered cairn at Cairnholy, the area in front of the wall and Sentinel Stones is believed to have been for worship or communal purposes, near Creetown, Dumfries and Galloway, Scotland, United Kingdom, Europe

142-5732 - The Sentinel, viewed from Chapman's Peak, Cape, South Africa, Africa

752-979 - Sunset Nugget Point Lighthouse New Zealand

752-980 - Nugget Point Lighthouse New Zealand

752-860 - Lighthouse Westerhever North Sea Germany

752-1216 - Sunset, Cape Ann Lighthouse, Gloucester, Massachusetts, USA